<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="10">
        <el-col :span="6">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addStatus">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 表格区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userState(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUser(scope.row.id)"
            ></el-button>
            <el-tooltip
              class="item"
              effect="light"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="showNewUsers(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[2, 4, 6, 8]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 添加用户框 -->
    <el-dialog title="添加用户" :visible.sync="addVisiable" width="50%" @close="addDialogClosed">
      <!-- 对话框表单区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addVisiable = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUsers">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%">
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>
          分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择角色" @close="setRoleDialogClosed">
            <!-- :label 显示文本，:value 选中值 -->
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 定义邮箱验证规则
    let checkEmail = (rule, value, callback) => {
      let regEmail = /^\w+@\w+(\.\w+)+$/
      if (regEmail.test(value)) {
        return callback()
      }
      //返回一个错误提示
      callback(new Error('请输入合法的邮箱'))
    }
    // 定义手机号验证规则
    let checkMobile = (rule, value, callback) => {
      let regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(value)) {
        return callback()
      }
      //返回一个错误提示
      callback(new Error('请输入合法的手机号码'))
    }
    return {
      // 获取用户列表参数
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 6
      },
      userList: [],
      total: 0,
      addVisiable: false,
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入用密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '用户名在6~15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入用邮箱', trigger: 'blur' },
          {
            validator: checkEmail,
            message: '邮箱格式不正确，请重新输入',
            trigger: 'blur'
          }
        ],
        mobile: [
          { required: true, message: '请输入用手机', trigger: 'blur' },
          {
            validator: checkMobile,
            message: '手机号格式不正确，请重新输入',
            trigger: 'blur'
          }
        ]
      },
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        email: [
          { required: true, message: '请输入用邮箱', trigger: 'blur' },
          {
            validator: checkEmail,
            message: '邮箱格式不正确，请重新输入',
            trigger: 'blur'
          }
        ],
        mobile: [
          { required: true, message: '请输入用手机', trigger: 'blur' },
          {
            validator: checkMobile,
            message: '手机号格式不正确，请重新输入',
            trigger: 'blur'
          }
        ]
      },
      //控制显示分配角色对话框
      setRoleDialogVisible: false,
      //保存正在操作的那个用户信息
      userInfo: {},
      //保存所有的角色信息
      rolesList: [],
      //保存用户选中的角色id
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      let { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      // 如果返回状态正常，将请求的数据保存在data中
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange(newSize) {
      // 将改变的页面显示数量赋值给pagesize
      this.queryInfo.pagesize = newSize
      // 重新渲染数据
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 用户状态函数
    async userState(userinfo) {
      console.log(userinfo)
      let { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        // 如果操作失败,则将状态重置回之前的状态
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('用户状态更新失败')
      }
      this.$message.success('用户状态更新成功')
    },
    // 添加按钮显示表单
    addStatus() {
      this.addVisiable = true
    },
    // 对话框关闭之后，重置表单
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户
    addUser() {
      // 调用validate进行表单验证
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return this.$message.error('请填写完整用户信息')
        // 发送请求完成添加用户的操作
        const { data: res } = await this.$http.post('users', this.addForm)
        // 判断如果添加失败，就做提示
        if (res.meta.status !== 201) return this.$message.error('添加用户失败')
        // 添加成功的提示
        this.$message.success('添加用户成功')
        // 关闭对话框
        this.addVisiable = false
        // 重请求最新的数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // 发送请求根据id获取用户信息
      const { data: res } = await this.$http.get('users/' + id)
      // 判断如果添加失败，就做提示
      if (res.meta.status !== 200)
        return this.$message.error('获取用户信息失败')
      // 将获取到的数据保存到数据editForm中
      this.editForm = res.data
      // 显示弹出窗
      this.editDialogVisible = true
    },
    // 对话框关闭之后，重置表单
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息事件
    editUsers() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return this.$message.error('请填写完整用户信息')
        // 发起修改用户信息的数据请求
        let { data: res } = await this.$http.put(`users/${this.editForm.id}`, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) return this.$message.error('修改用户失败')
        // 添加成功的提示
        this.$message.success('修改用户成功')
        // 关闭对话框
        this.editDialogVisible = false
        // 重请求最新的数据
        this.getUserList()
      })
    },
    // 删除用户信息
    async removeUser(id) {
      // 弹出对话框询问是否删除
      let confirmResult = await this.$confirm(
        '请问是否要永久删除该用户',
        '删除提示',
        {
          confirmButtonText: '确认删除',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      // 如果用户点击确认，则confirmResult 为'confirm'
      // 如果用户点击取消, 则confirmResult获取的就是catch的错误消息'cancel'
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除')
      }
      let { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除用户失败')
      this.$message.success('删除成功')
      this.getUserList()
    },
    // 展示分配角色的
    async showNewUsers(userInfo) {
      this.userInfo = userInfo
      let { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200)
        return this.$message.error('获取角色列表失败')
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击确定,分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) return this.$message.error('请选择要分配的角色')
      let { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      )
      if (res.meta.status !== 200) return this.$message.error('分配角色失败')
      this.$message.success('分配角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 对话框关闭时,重置数据
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scope>
</style>
